of enterprise



D. H. BALL.

Heating Drum.

No 86,270. Patented Jan. 26, 1869.

Ji/ZaJ w C D. H. BALL, OF ENTERPRISE, PENNSYLVANIA.

Letters Patent No. 86,270, dated Janua/ry 26, 1869.

FRICTION-HEATER FOR MILLS, 8L0.

The Schedule referred to in these Letters Patent and making part' of thesame.

To all whom it may concern.-

Be it known that I, D. H. BALL, of Enterprise, Gaineron county, andState ofPennsylvania, have invented a, new and useful Heater for HeatingMills, 85c, and I hereby declare the following to be an exactdescription thereof, reference being had to the accompanying drawings,and to the letters of reference marked thereon, making a part of thisspecification, in which- Figure 1 represents a top View of the heater.

Figure 2, a cross-section.

Figures 3 and 4; are sectional views of the interior of the cylinder.

The nature of my invention consists in the construction of acast-iroudrum, in two halves, having a fanwheel inthe centre, one halfstationary, and the other half revolving with the axle, the friction ofthe two halves creating heat, and the heat regulated by a lever thatadjusts the two halves closer or wider apart, so as to increase orlessen the fiietion, the drum being attached to the shafting of anymachinery, for the purpose of heating mills or machine-shops, or can beattached to the axles of cars, for the purpose of heating railway-cars.

A represents a frame that supports the devices.

B, the shaft upon which the revolving drum 0 opcrates.

D is the adjustable and stationary drum, is adjusted by the pivotedlever E, and held stationary by the lever being fastened to its hub G.

The centre of the two drums is hollow, and in this chamber, H, afan-wheel, J, (that is attached to the shaft 13,) operates, air passingin at side apertures, K K, of both drums, and passing out throughapertures in a groove, L, the heated air discharged through a pipe, M.

When the drums O and D become red hot by friction, by the lever E thedrum D is adjusted, and the friction lessened, and the heat regulated bythus'separatiug the drums.

The upright lever N is adjusted againstthe leverE at any time, toincrease the pressure of the drum D against the opposite drum, G.

The fan J drives out the heated air, into a room of a mill, forheating-purposes, or for drying grain, and also for Warmingrailway-cars.

- The casing P, that surrounds the drum, is stationary, and a sufiicient distance from the drum to prevent the heat that may begenerated from doing any damage to the building or car to which itmay beattached.

The wearing away of the drums, from friction, might be supposed to begreat and rapid, but such is not the case, as, after running but a shorttime, their faces become glazed over, as it were, which very effectuallyprevents their wearing away, and being adjusted 'by separation, wearvery little.

I do not claim friction-drums, or heaters, as they have been usedbefore; but

What I claim as my invention, and desire to secure by Letters Patent, is

The construction of the drums O and D, with their apertures K, groove L,and outside case P, when arranged and combined with a fan-wheel, J, inthe centre, as herein described, and for the purposes set forth.Witnesses: D. H. BALL.

J. FRANKLIN REIGART,

EDM. F. BRown.

